JP6856373B2 - Skin-integrated molded product and its manufacturing method - Google Patents

Description

The present invention relates to an epidermis-integrated molded product and a method for producing the same, and in particular, foaming of the epidermis and the inside by injecting a foaming raw material into the inside of the epidermis formed in a bag shape and foaming the inside to fill the foam. It relates to a skin-integrated molded product that integrally molds a body and a method for manufacturing the same.

As a skin-integrated molded product, for example, regarding the molding of a headrest of a vehicle seat, for example, Japanese Patent Application Laid-Open No. 10-128769 (Patent Document 1) states that a pad is integrally foamed on a bag-shaped sewn skin in a summary column. In the headrest, the edge of the opening (A) of the skin (C) sewn in a bag shape for the purpose of preventing the foaming material for pad molding from leaking to the outside.
It is described that a cover piece (1) with an injection port (10A) extending inward is provided, and an injection nozzle (30) is inserted to inject a foamed raw material for pad molding.

Further, in Japanese Patent Application Laid-Open No. 11-314230 (Patent Document 2), in the summary column, in the headrest in which the pad is integrally foamed on the skin sewn in a bag shape, the pad is not provided with a closing member at the opening. For the purpose of preventing the foaming material for molding from leaking to the outside, a hooking protrusion (2) is provided on the injection nozzle (1) to be inserted into the inside through the opening (A) of the skin (C) sewn in a bag shape. A tongue piece (40) extending inward from the opening (A) of the epidermis (C) by pulling the injection nozzle (1) provided and inserted into the epidermis (C) in the direction opposite to the insertion direction. It is described that after closing the opening (A), the foaming raw material is injected into the epidermis (C) from the injection nozzle (1).

Further, in Japanese Patent Application Laid-Open No. 2005-59428 (Patent Document 3), in the summary column, for the purpose of preventing leakage of foaming raw materials, facilitating sewing work, facilitating foaming work, and improving the degree of freedom in design. ,
A plurality of skin components are sewn together to form the skin member H, and the foamed raw material is formed at a predetermined position of the slit 14 between the lower front skin member 6 and the lower rear skin member 7 of the lower skin member 5 of the skin member H. In a headrest manufactured by forming an injection port 15 and inserting an injection nozzle 20 into an injection port 15 to inject a foamed raw material of a cushioning material 2, headrests are attached to the lower front skin member 6 and the lower rear skin member 7, respectively. The exposed portions 10 and 11 exposed on the surface side of the main body 1 and the buried portions 12 and 13 buried in the foamed cushion material 2 in close contact with each other are formed, respectively, and the front buried portion 12 of the lower front skin member 6 is formed.
An injection port forming buried cloth in which an injection port 15 is formed by a notch portion 16 having substantially the same size as the injection nozzle 20 at the edge facing one slit 14 of the rear side buried portion 13 of the lower rear skin member 7. Described is a method for manufacturing a headrest in which one end edge 18 of 17 is sewn 19 and an injection nozzle 20 inserted through a slit 14 is inserted into a skin member H from an injection port 15 to foam a foaming raw material.

Further, in Japanese Patent No. 2847647 (Patent Document 4), in claim 1, an insert is arranged in the skin of a bag-shaped skin forming a slit-shaped opening, and the insert and the skin are placed in a foam molding mold. In the method for manufacturing an insert-embedded skin-integrated foam product in which a foaming material is injected into the skin through the opening after setting and foam molding is performed integrally with the skin and the insert, the edge of the skin is extended from the opening to the inside of the skin. A pair of tongue pieces are provided, a tubular film is sandwiched between the tongue pieces, and a plate-shaped jig having a length substantially equal to the opening length is inserted between the tongue pieces to insert the lower end of the plate-shaped jig. After the opening is stretched linearly with a plate-shaped jig by keeping it in the tongue piece and setting it, the funnel is inserted into the tubular film and the foamed raw material is injected into the epidermis through the funnel. Alternatively, a built-in insert is characterized in that an injection nozzle for a foamed raw material is inserted into the tubular film, the foamed raw material is injected into the epidermis, foam molding is performed, and then the plate-shaped jig is pulled out from between the tongue pieces. A method for manufacturing a foamed product with an integral skin is described.

Japanese Unexamined Patent Publication No. 10-128769 Japanese Unexamined Patent Publication No. 11-314230 Japanese Unexamined Patent Publication No. 2005-59428 Japanese Patent No. 2847647

The seat headrest for a vehicle, when by foaming the foaming material within the epidermis sewn into a bag shape to the skin-integrated molded by molding a pad, pad shaping during foam is prevented from leaking to the outside As a method, Patent Document 1 describes an opening (C) of a skin (C) sewn in a bag shape.
A cover piece (1) with an injection port (10A) extending inward is provided at the edge of A), and an injection nozzle (30) is provided.
) Is inserted to inject the foamed raw material for pad molding , but when the foamed raw material is injected, the cover piece forming the injection port and the other cover piece are surely brought into contact with each other. There is no description about ensuring that the foam for pad molding leaks to the outside.

Further, in Patent Document 2, the injection nozzle inserted into the epidermis is pulled in the direction opposite to the insertion direction to close the opening with a tongue piece extending inward from the opening of the epidermis, and then the injection nozzle is provided. Although the method of injecting the foamed raw material into the epidermis is shown, even if the injection nozzle is pulled in the direction opposite to the insertion direction, the cover piece on the side where the injection nozzle is inserted is the entire area in the width direction of this cover piece. It is not always possible to reliably contact the other cover piece, and there is a possibility that it may not be possible to reliably prevent the foam for pad molding from leaking to the outside. There is.

Further, in Patent Document 3, an injection port is formed in a buried cloth for forming an injection port by a notch having a size substantially the same as that of the injection nozzle, and the injection nozzle is inserted as shown in FIG. 9 of Patent Document 3. There will be a gap between the injection port and the buried cloth for forming the injection port, and the foam may leak to the outside through this gap, ensuring that the foam for pad molding leaks to the outside. There is a possibility that it may not be possible to prevent it.

Further, Patent Document 4 has a configuration in which a tubular film is sandwiched between a pair of tongue pieces provided so as to extend the edge of the epidermis from the opening to the inside of the epidermis, and the foam is supplied from this tube to the inside of the epidermis. However, a gap is formed between the tube and the pair of tongue pieces formed by extending the edge of the opposite epidermis and bending it into the epidermis, and foaming for pad molding is formed from this gap. There may be cases where it is not possible to reliably prevent the body from leaking to the outside.

The present invention has been made to solve the problems of the prior art described above, by forming the pad by foam to skin-integrated molded by foaming by supplying an internal foamed material of the epidermis which is sewn into a bag shape In this case, the present invention provides a skin-integrated molded product and a method for manufacturing the same, which can reliably prevent the foam for pad molding from leaking to the outside.

To solve the problems described above, in the present invention, foaming inside the skin to the epidermis the skin-integrated molded article was molded by filling a foam inside the skin formed in a bag shape, and formed in a bag shape An opening is formed to supply a foaming material for molding the body, and the epidermis on one side of the epidermis sandwiching the opening is bent inside the opening to open the opening. The epidermis on the other side of the sandwiching epidermis has a portion that is easily bent at the tip that is bent inside the opening, and the portion that is bent inside the opening of the epidermis on one side and the epidermis on the other side. The part that is bent inside the opening is in close contact with each other on both ends of the opening and faces each other with a gap near the center of the opening, and the part that is bent inside the opening of the epidermis on one side. And the part that is bent inside the opening of the epidermis on the other side are facing each other with a gap, and the part that is ahead of the part that is easily bent of the epidermis on the other side is the epidermis on one side. It was configured so that it was formed in close contact with the bent portion inside the opening of the.

Further, in order to solve the above-mentioned problems, in the present invention, in the method for producing a skin-integrated molded product in which a foam is filled inside a bag-shaped skin and molded, the bag-shaped skin is formed. An opening is formed inside the epidermis for supplying a foaming raw material for molding the foam, and the epidermis on one side of the epidermis sandwiching the opening is bent inside the opening, and the opening is formed. The epidermis on the other side of the sandwiching epidermis is formed so that the tip of the bent portion inside the opening is easily bent, and the tip of the bent portion is formed inside the opening or the portion ahead of the easily bent portion. Is a hole for passing a nozzle for supplying a foaming material to the inside of a bag-shaped epidermis, and a hole smaller than the diameter of the nozzle is formed, and is on the other side of the epidermis sandwiching the opening. The nozzle is passed through a hole formed in the epidermis for passing the nozzle, and the opening is pulled in the longitudinal direction of the opening to bend the inside of the opening of the epidermis on one side and the opening of the epidermis on the other side. The part bent inside the part was brought into close contact with the part separated from the nozzle through the hole, and the part bent inside the opening of the epidermis on one side and the part bent inside the opening of the epidermis on the other side were bent. By pulling back the nozzle that has passed through the hole in a state where the portion is in close contact with the nozzle that has passed through the hole, the portion of the epidermis on the other side that is easily bent is bent and the epidermis on the other side is bent. The part that is bent beyond the easily bent part of the nozzle is the part that is bent inside the opening of the epidermis on one side and the part that is bent inside the opening of the epidermis on the other side near the nozzle. In the non-adhesive portion, press against the inwardly bent portion of the epidermis on one side, and the portion of the epidermis on the other side that is ahead of the easily bent portion of the epidermis on the other side. A foaming material is supplied from the nozzle to the inside of the bag-shaped epidermis while being pressed against the bent portion inside the opening, and the supplied foaming material is foamed to the inside of the bag-shaped epidermis. The foam was filled.

According to the present invention, the skin-integrated molded product can be molded by reliably filling the inside of the bag-shaped skin without the foam leaking to the outside.

It is a perspective view which includes the partial cross section of the headrest which concerns on Example 1 of this invention. It is a perspective view of the anterior side epidermis and the posterior side epidermis of the headrest which concerns on Example 1 of this invention. It is sectional drawing which shows the state which the nozzle of the funnel is deeply inserted in the headrest which concerns on Example 1 of this invention. FIG. 5 is a cross-sectional view showing a state in which the nozzle of the funnel inserted deeply in the headrest according to the first embodiment of the present invention is slightly pulled up. It is a perspective view which includes the partial cross section of the headrest which concerns on the modification 1 of Example 1 of this invention. It is a perspective view of the front side epidermis and the rear side epidermis of the headrest which concerns on the modification 1 of Example 1 of this invention. It is a perspective view of the anterior side epidermis and the posterior side epidermis of the headrest which concerns on Example 2 of this invention. FIG. 5 is a cross-sectional view showing a state in which the nozzle of the funnel inserted deeply in the headrest according to the second embodiment of the present invention is slightly pulled up. It is sectional drawing which shows the state which pulled up the nozzle of the funnel deeply inserted in the headrest which concerns on the modification of Example 2 of this invention. It is a perspective view of the anterior side epidermis and the posterior side epidermis of the headrest which concerns on Example 3 of this invention. It is a perspective view which includes the partial cross section of the headrest which concerns on Example 4 of this invention. It is a perspective view of the anterior side epidermis and the posterior side epidermis of the headrest which concerns on Example 4 of this invention.

The present invention relates to a skin-integrated molded product and a method for producing the same, which can surely prevent the foam from leaking to the outside.

When the present invention is applied to the headrest of a vehicle seat, a foaming material is injected into the bag-shaped skin from a nozzle or tube, and the foaming material is foamed to foam inside the bag-shaped skin. In the configuration for filling the body, the foamed material (foam) can be reliably prevented from leaking to the outside from between the nozzle or tube and the bag-shaped epidermis.

Hereinafter, examples of the case where the present invention is applied to a headrest of a vehicle seat will be described with reference to the drawings.

In all the drawings for explaining the present embodiment, those having the same function shall be designated by the same reference numerals, and the repeated description thereof will be omitted in principle. Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

However, the present invention is not construed as being limited to the description of the embodiments shown below. It is easily understood by those skilled in the art that a specific configuration thereof can be changed without departing from the idea or gist of the present invention.

FIG. 1 shows a perspective view of the headrest 100 in a state where the foamed raw material is injected into the headrest according to the present embodiment, and the front skin 11 forming the opening 150 of the headrest 100.
A perspective view of 1 and the posterior epidermis 112 is shown in FIG.

Internal headrest 100 according to this embodiment includes a skin 110 covering the surface is formed in a bag shape, the inside covered with the bag-like in the epidermis 110 by injecting the foaming material is molded by foaming pouched The foam 120 is filled with the foam 120, and a stay 130 is provided in which a part of the foam 120 is embedded in the foam 120 and both ends protrude outward from the skin 110.

The headrest 100 is attached to the seat back by inserting the stay 130 into a receiving hole formed in the upper part of the seat back of a vehicle seat (not shown) with the portion protruding outward from the skin 110 facing downward.

With the end of the stay 130 facing upward as shown in FIG. 1, the upper surface of the skin 110 (the end of the stay 130 protruding outward from the skin 110 of the stay 130 is not shown) of the vehicle seat. The surface facing the upper part of the seatback when inserted into the receiving hole formed in the headrest stay guide arranged on the upper part of the seatback) is formed by the front side skin 111 and the rear side skin 112.

The anterior epidermis 111 and the posterior epidermis 112 are sutured at the sutured portions 113 and 114 and connected to each other. A non-sewn portion, that is, an opening 150 is formed between the sutured portions 113 and 114. FIG. 1 shows the opening 15 with the opening 150 facing up.
It shows a state in which the nozzle 142 at the tip of the funnel 141 from 0 is inserted into the inside covered with the skin 110 formed in a bag shape from the opening 150.

As shown in FIG. 2, the front skin 111 has a tip portion 111 having the same width as the width of the opening 150.
1 is bent downward. Seam allowances for suturing with the posterior epidermis 112 are formed on both sides of the tip portion 1111. However, the seam allowance is omitted in FIG. 2 for the sake of simplification.

On the other hand, as shown in FIG. 2, in the rear epidermis 112, the tip portion 1121 having the same width as the width of the opening 150 is bent downward, and the end portion 1122 beyond the tip portion 1122 is further bent. The boundary portion 1123 between the tip portion 1121 and the end portion 1122 is formed with a seam by a sewing machine, and is formed thinner than the tip portion 1121 and the end portion 1122. Tip part 112
Seam allowances for suturing with the anterior epidermis 111 are formed on both sides of No. 1, but the drawings are omitted in FIG. 2 for the sake of simplification. In addition, 1125 is stay 130
It is a hole provided for passing through.

Reference numeral 1124 is a hole formed in the end portion 1122, and the nozzle 142 at the tip portion of the funnel 141 penetrates the hole 1124. The diameter d2 of the hole 1124 is formed to be slightly smaller than the diameter (outer diameter) d1 of the nozzle 142 at the tip of the funnel 141. With such a dimensional relationship, as shown in FIG. 3, the nozzle 142 at the tip of the funnel 141 is connected to the end 112.
By passing through the hole 1124 formed in 2, the hole 1124 is expanded by the nozzle 142 and comes into close contact with the nozzle, so that a gap is not formed between the end portion 1122 and the nozzle 142.

By forming a seam with a sewing machine at the boundary portion 1123 between the tip portion 1121 and the end portion 1122 on the side of the rear skin 112, the boundary portion 1123 has the tip portion 1121 and the end portion 112.
It is thinner than 2. In this state, the hole 11 formed in the end 1122 of the nozzle 142.
By pulling up the nozzle 142 as shown in FIG. 4 after passing through 24 once, the bending stress generated in the tip portion 1121 and the end portion 1122 is the boundary portion 11 in which the perforations are formed.
Focus on 23. As a result, the boundary portion 112 as described in Patent Documents 1 and 2.
The end portion 1122 is more likely to bend with respect to the tip portion 1121 than in the case where the perforation is not formed in 3.

When supplying the foaming raw material from the nozzle 142 to the inside of the bag-shaped skin 110, first, the nozzle 142 is inserted into the inside through the opening 150, and the tip portion of the nozzle 142 is inserted into the end portion 11.
It penetrates the hole 1124 formed in 22. In this state, the hole 1 formed in the end 1122
No gap is formed between the 124 and the nozzle 142.

Next, a tensile force is applied to the opening 150 in the longitudinal direction of the opening (hereinafter, referred to as the longitudinal direction of the opening 150) using a means (not shown). With this tension applied, the tip portion 1111 in the opening 150 on the side of the front skin 111 and the tip portion 1121 in the opening 150 on the side of the rear skin 112 are separated from the nozzle 142. Adhere to the part. On the other hand, in the vicinity of the nozzle 142, a gap is formed between the tip portion 1111 on the front side skin 111 side and the tip portion 1121 on the rear side skin 112 side with the nozzle 142 sandwiched, and the skin is formed in a bag shape. The inside of the 110 is not sealed with respect to the outside of the skin 110.

Here, since the end portion 1122 has a structure that is easily bent with respect to the tip portion 1121, the nozzle 1 is once passed through the hole 1124 in a state where the opening 150 is subjected to a tensile force in the longitudinal direction.
By pulling up (pulling back) 42 to the extent that it does not come off from the hole 1124, the end 1122 in which the hole 1124 is formed is pulled up by the nozzle 142, and the tip portion 1 of the front skin 111 is pulled up.
It adheres to 111 and can be pressed securely without any gaps.

As a result, the bottom of the gap formed between the tip portion 1111 on the front side skin 111 side and the tip portion 1121 on the rear side skin 112 side in the vicinity of the nozzle 142 (the inside of the skin 110 formed in a bag shape). The boundary with the space side of the skin 110) is closed, and the inside of the bag-shaped skin 110 can be sealed with respect to the outside of the skin 110 at a portion other than the nozzle 142.

In such a state, the foaming raw material is supplied from the nozzle 142 to the inside of the bag-shaped skin 110 by a supply means (not shown). The foaming raw material supplied to the inside of the skin 110 foams to become a foam 120, which is filled inside the bag-shaped skin 110. At this time, as shown in FIG. 4, the tip portion 1111 on the side of the front epidermis 111 and the posterior epidermis 112
The bottom of the gap formed in the vicinity of the nozzle 142 with the tip portion 1121 on the rear side is sealed by the end 1122 on the side of the rear skin 112.

As a result, the foam 120 generated inside the bag-shaped epidermis 110 opens the opening 15.
The inside of the bag-shaped epidermis 110 can be reliably filled without leaking from 0 to the outside.

According to this embodiment, the opening 1 formed between the anterior epidermis 111 and the posterior epidermis 112.
The bottom of the gap between the front skin 111 and the rear skin 112 formed in the vicinity of the nozzle 142 in a state where the 50 is pulled in the longitudinal direction of the opening 150 (the portion connecting to the inside of the bag-shaped skin). ) Can be sealed at the end 1122 of the posterior epidermis 112. As a result, the foam 120 can be reliably filled inside the bag-shaped skin 110 without leaking out from the opening 150, and the headrest can be molded without impairing the appearance quality. it can.

Further, since the foam 120 can be surely filled inside the bag-shaped skin 110 without leaking to the outside from the opening 150, the occurrence of defective products can be suppressed and the product yield can be reduced. Can be raised.

[Modification 1 of Example 1]
In the first embodiment, the width of the end 1122 on the side of the posterior epidermis 112 is set to the width of the anterior epidermis 111.
An example is shown in which the tip portion 1111 on the side of the is formed with the same dimensions as the width L. But the end 1122
May cover the bottom of the gap between the front skin 111 and the rear skin 112 formed in the vicinity of the nozzle 142 in a state of being pulled in the longitudinal direction of the opening 150. Therefore, the width of the end portion 1122 does not necessarily have to be the same as the width L of the tip portion 1111 on the front side skin 111 side.

In this modification, as shown in FIG. 6, the end 1122-on the side of the posterior epidermis 112-1.
The width L1 of 1 was formed to be smaller than the width L of the tip portion 1111-1 on the side of the front epidermis 111-1.

As shown in FIG. 5, when the stay 130 is attached to the side of the front side skin 111-1, the width of the end portion 1122-1 on the side of the rear side skin 112-1 is set to the width of the front side skin 111.
Rear epidermis 112- when formed with the same dimensions as the width L of the tip portion 1111-1 on the -1 side
This occurs when the end portion 1122-1 on the side of 1 interferes with the stay 130. But,
As shown in this modification, the width L1 of the end portion 1122-1 on the side of the posterior epidermis 112-1 is formed smaller than the width L of the tip portion 1111-1 on the side of the anterior epidermis 111-1. By
Front skin 1 formed in the vicinity of the nozzle 142 with the opening 150 pulled in the longitudinal direction
The bottom is in the gap between 11-1 and the posterior epidermis 112-1, and the end 1 on the side of the posterior epidermis 112-1.
At 122-1, it can be reliably covered without interfering with the stay 130.

[Modification 2 of Example 1]
In the first embodiment, a seam is formed at the boundary portion 1123 between the tip portion 1121 and the end portion 1122 of the rear skin 112 with a sewing machine to partially thin the seam, thereby temporarily filling the hole 1124 formed in the end portion 1122. When pulling up the threaded nozzle 142, stress was concentrated on the partially thinly formed boundary portion 1123 to ensure that it was bent at the boundary portion 1123.

On the contrary. In this modification, the boundary portion 1123 between the tip portion 1121 and the end portion 1122 of the rear skin 112 is heated and pressurized using a heater instead of forming a seam with a sewing machine to partially thin it. It was formed so as to be partially thinned. This will
As in the case of the first embodiment, the nozzle 14 once passed through the hole 1124 formed in the end 1122.
When pulling up 2, stress was concentrated on the partially thinly formed boundary portion 1123 to ensure that it was bent at the boundary portion 1123.

As a result, as in the case of the first embodiment, the opening 150 formed between the front side skin 111 and the rear side skin 112 is formed in the vicinity of the nozzle 142 in a state of being pulled in the longitudinal direction of the opening 150. The bottom of the gap between the front skin 111 and the rear skin 112 can be sealed by the end 1122 of the rear skin 112, and the foam 120 does not leak to the outside from the opening 150, forming a bag shape. The inside of the formed epidermis 110 can be reliably filled.

In the first embodiment, by inserting the nozzle 142 into the hole 1124 formed in the end 1122 on the side of the rear skin 112 and then pulling it upward, the end 1122 is surely pulled up and formed in the vicinity of the nozzle 142. As a configuration for covering the bottom of the gap between the front side skin 111 and the rear side skin 112, a structure in which a seam is formed at the boundary portion 1123 between the tip portion 1121 and the end portion 1122 on the rear side skin 112 side will be described. did.

On the other hand, in this embodiment, the tip portion 1121-2 and the end portion 1122-2 on the rear side skin 112-2 side are formed separately, and their joint portion 1123-2 is sewn with a sewing machine. The structure was set up. Since the other parts are the same as in the case of the first embodiment, the description thereof will be omitted.

FIG. 7 shows the configuration of the anterior epidermis 111-2 and the posterior epidermis 112-2 in this embodiment.
With such a configuration, a tensile force is applied in the longitudinal direction of the opening 150 to apply a tensile force in the longitudinal direction of the opening 150 to the tip portion 1111-2 and the rear side on the front side skin 111-2 side, as described in the first embodiment. With the tip portion 1121-2 on the side of the skin 112-2 in close contact with the portion away from the nozzle 142, the nozzle 142 is once passed through the hole 1124-2 and then the nozzle 142 is pulled up to end the end 1122. -2 is bent upward from the sewn joint portion 1123-2, and the vicinity of the tip portion of the end portion 1122-2 in which the hole 1124-2 is formed is surely pushed to the tip portion 1111-2 of the front skin 111-2. You can guess.

Hole 1124-2 in which the nozzle 142 is formed at the end 1122-2 in the AA cross section of FIG.
FIG. 8 shows a state in which the end portion 1122-2 is pressed against the tip portion 1111-2 of the front epidermis 111-2 by being once inserted into the skin and then pulled upward.

As a result, with a tensile force applied in the longitudinal direction of the opening 150, the tip portion 1111-2 on the front side skin 111-2 side and the tip portion 1121-side on the rear side skin 112-2 in the vicinity of the nozzle 142. The bottom of the gap formed between 2 and 2 is closed, and the epidermis 110 is formed in a bag shape.
The inside of the skin 110 can be sealed with respect to the outside of the skin 110.

In this state, the foaming raw material is supplied from the nozzle 142 to the inside of the bag-shaped skin 110 by a supply means (not shown), and foamed inside the bag-shaped skin 110 to advance the front. The gap formed in the vicinity of the nozzle 142 between the tip portion 1111-2 on the side of the side skin 111-2 and the tip portion 1121-2 on the side of the rear skin 112-2 is on the side of the rear skin 112. Since the foam 120 is sealed by the end 1122, the foam 120 does not leak to the outside from the opening 150, and the inside of the bag-shaped skin 110 can be reliably filled.

As described in the modified example of Example 1, the end 1122 on the side of the posterior epidermis 112-2.
The width dimension of -2 may be formed shorter than the width dimension L of the tip portion 1111-2 of the front skin 111-2.

According to this embodiment, the opening 150 formed between the front skin 111-2 and the rear skin 112-2 is formed in the vicinity of the nozzle 142 in a state of being pulled in the longitudinal direction of the opening 150. The gap between the anterior epidermis 111-2 and the posterior epidermis 112-2 can be sealed by the end 1122-2 of the posterior epidermis 112-2. As a result, the foam 120 can be reliably filled inside the bag-shaped skin 110 without leaking out from the opening 150, and the headrest can be molded without impairing the appearance quality. it can.

Further, since the foam 120 can be surely filled inside the bag-shaped skin 110 without leaking to the outside from the opening 150, the occurrence of defective products can be suppressed and the product yield can be reduced. Can be raised.

[Modification of Example 2]
In the second embodiment, as shown in FIGS. 7 and 8, the tip portion 1121-2 and the end portion 1122-2 on the side of the posterior epidermis 112-2 are formed separately, and their joint portion 1123 is formed. -2 was sewn with a sewing machine. On the other hand, in this modification, instead of sewing with a sewing machine, as shown in FIG. 9, the tip portion 1121-3 and the end portion 1122-3 on the rear side skin 112-3 side are joined. The portion 1123-3 is thermocompression-bonded and sewn.

By joining the tip portion 1121-3 and the end portion 1122-3 on the side of the posterior epidermis 112-3 with such a structure, the same effect as that described in the second embodiment can be obtained. ..

In the first embodiment, the hole 1124 through which the nozzle 142 is passed is formed in a portion closer to the tip of the end portion 1122 than the boundary portion 1123 in which the perforation is formed. Nozzle 142 at the boundary portion 1123-4 where the perforations on the side of
The structure is formed closer to the tip of the end 1122-4 than the hole 124-4 through which the hole is passed. Since the configuration of the other parts is the same as that of the first embodiment, the description thereof will be omitted.

As shown in FIG. 10, the rear epidermis 112-4 has a tip portion 1121-4 having the same width as the width of the opening 150 and is bent downward to form a hole 1124-4 through which the nozzle 142 passes. The boundary portion 1123-4 of the tip portion 1121-4 with the tip end portion 1122-4 is formed with a seam by a sewing machine, and is formed thinner than the tip portion 1121-4 and the end portion 1122-4.

Boundary portion 1 between the tip portion 1121-4 and the end portion 1122-4 on the side of the posterior epidermis 112-4
By forming a seam on 123-4 with a sewing machine, the boundary portion 1123-4 becomes the tip portion 1
It is thinner than 121-4 and 1122-4 at the end. In this state, the nozzle 142 is once passed through the hole 1124-4 formed in the tip portion 1121-4, and then the tip portion 1121-4 is lifted by pulling up the nozzle 142, and the end portion 1122-4 is the front skin 1
It is pressed against the tip portion 1111-4 on the side of 11-4.

Here, since the boundary portion 1123-4 in which the seam is formed by the sewing machine is formed on the side closer to the tip portion 1111-4 on the side of the front side skin 111-4 than the nozzle 142, the front side skin 111-4 Even if the end face 1112-4 of the tip portion 1111-4 on the side of the side and the upper surface of the end 1122-4 of the rear skin 112-4 are not parallel to each other, the boundary portion 1123 on which the perforation is formed is formed. -4 absorbs the inclination and the end 1122-4 is attached to the front epidermis 111-4.
It can be brought into close contact with the end surface 1112-4 of the tip portion 1111-4 on the side of.

As a result, with the opening 150 applying a tensile force in the longitudinal direction, the tip portion 1111-4 on the front side skin 111-4 side and the tip portion 1121-side on the rear side skin 112-4 in the vicinity of the nozzle 142. The gap formed between the skin and the skin 110 can be closed so that the inside of the bag-shaped skin 110 is sealed with respect to the outside of the skin 110.

In this state, by the supply means not shown, molded Then the foam 120 by supplying inside the foam material of the skin 110 formed in a bag shape from the nozzle 142, the front-side skin 111
The gap formed in the vicinity of the nozzle 142 between the tip portion 1111-4 on the side of -4 and the tip portion 1121-4 on the side of the posterior epidermis 112-4 is the end on the side of the posterior epidermis 112-4. Part 112
Since it is sealed by 2-4, the foam 120 does not leak to the outside from the opening 150, and the inside of the bag-shaped skin 110 can be reliably filled.

As described in the modified example of Example 1, the end 1122 on the side of the posterior epidermis 112-4.
The width dimension of -4 may be formed shorter than the width dimension L of the tip portion 1111-4 of the front skin 111-4.

According to this embodiment, the opening 150 formed between the front skin 111-4 and the rear skin 112-4 is formed in the vicinity of the nozzle 142 in a state of being pulled in the longitudinal direction of the opening 150. The gap between the anterior epidermis 111-4 and the posterior epidermis 112-4 can be sealed by the end 1122-4 of the posterior epidermis 112-4. As a result, the foam 120 can be reliably filled inside the bag-shaped skin 110 without leaking out from the opening 150, and the headrest can be molded without impairing the appearance quality. it can.

Further, since the foam 120 can be surely filled inside the bag-shaped skin 110 without leaking to the outside from the opening 150, the occurrence of defective products can be suppressed and the product yield can be reduced. Can be raised.

[Modification of Example 3]
In this embodiment, the perforated boundary portion 1123 is passed through the hole 11 through which the nozzle 142 is passed.
The structure is formed closer to the tip of the end 1122-4 than 24-4, but in combination with Example 1, the hole 1124-4 through which the nozzle 142 passes through the tip of the end 1122-4.
A boundary portion 1123-4 in which perforations are formed may be formed before and after the above.

In Examples 1 to 3, the skin 110 in which the nozzle 142 of the funnel 141 is formed in a bag shape.
Although the configuration has been described in which the foamed raw material is directly supplied from the nozzle 142 to the inside of the skin 110 formed in a bag shape by inserting it into the inside of the funnel 141, in this embodiment, the foaming material is directly supplied from the nozzle 142 of the funnel 141 through a flexible tube. A configuration for supplying the inside of the bag-shaped epidermis 110 will be described.

A method of manufacturing the headrest 400 according to the present embodiment by skin-integrated molding will be described with reference to FIGS. 11 and 12.

In FIG. 11, the configuration of the headrest 400 is the same as the configuration of the headrest 100 shown in FIG. 1 described in the first embodiment. In the configuration shown in FIG. 11, the skin 410 formed in a bag shape by a tube 160 made of a flexible material such as vinyl from the nozzle 142 of the funnel 141 arranged in the vertical direction with the headrest 400 turned sideways. Supply the foaming material to the inside of the.

The skin 410 in a state where the end of the stay 130 is turned sideways as shown in FIG.
The lateral surface on which the stay 130 protrudes is formed of an upper epidermis 411 and a lower epidermis 412. The upper epidermis 411 corresponds to the anterior epidermis 111 described in Example 1, and the lower epidermis 412 corresponds to the posterior epidermis 112 described in Example 1.

The upper epidermis 411 and the lower epidermis 412 are 413 and 41 as described in Example 1.
It is sewn at the 4th part and connected to each other. An unsewn portion, that is, an opening 450 is formed between the sutured portions 413 and 414. FIG. 11 shows a state in which the tube 160 is inserted into the opening 450 with the opening 450 turned sideways, and the nozzle 142 at the tip of the funnel 141 is inserted into the tube 160.

As shown in FIG. 12, the upper epidermis 411 has a tip portion 411 having the same width as the width of the opening 450.
1 is bent inward. Seam allowances for suturing with the lower epidermis 412 are formed on both sides of the tip portion 4111, but the illustration is omitted in FIG. 11 for the sake of simplification.

On the other hand, in the lower epidermis 412, as shown in FIG. 11, a tip portion 4121 having the same width as the width of the opening 450 is bent inward, and an end portion 4122 is further formed at the tip portion 4121. The boundary portion 4123 between the tip portion 4121 and the end portion 4122 is formed with a seam by a sewing machine, and is formed thinner than the tip portion 4121 and the end portion 4122. Seam allowances for suturing with the upper epidermis 411 are formed on both sides of the tip portion 4121, but the illustration is omitted in FIG. 11 for the sake of simplification.
Reference numeral 4124 is a hole formed in the tip portion 4121 of the lower epidermis 412, and this hole 4124
Through the tube 160, the tube 160 passes through the inside of the epidermis 410 formed in the shape of a bag. Hole 4124
The diameter d3 of is formed in a size that allows the flexible tube 160 to easily pass through. Tube 16
Since 0 is made of a flexible material such as vinyl, fold it to make the cross section smaller and make the hole 4
You can pass 124.

When the foaming raw material is supplied from the nozzle 142 to the inside of the bag-shaped skin 410 through the tube 160, first, a tensile force is applied in the longitudinal direction of the opening 450 by using a means (not shown). In this state, the tip portion 4111 on the side of the upper skin 411 and the tip portion 4121 on the side of the lower skin 412 are in close contact with each other.

In this state, when the foamed raw material is supplied from the nozzle 142 to the inside of the skin 410 formed in a bag shape through the tube 160, the foamed raw material is supplied under pressure by a means (not shown), and is therefore added to the opening 450. The tube 160, which has been crushed by tension, swells. The hole 4124 formed in the tip portion 4121 of the lower skin 412 is formed in a size such that the tube 160 is in close contact with the hole 4124 in a state where the tube 160 is inflated.

By swelling the tube 160 in this way, in the vicinity of the tube 160, a gap is formed between the tip portion 4111 on the side of the upper skin 411 and the tip portion 4121 on the side of the lower skin 412, and is formed in a bag shape. The inside of the skin 410 is not sealed with respect to the outside of the skin 410.

The foaming raw material supplied from the tube 160 to the inside of the skin 410 formed in a bag shape foams inside the skin 410. At this time, the supplied foaming raw material is a bag-shaped epidermis 410.
It accumulates on the lower side inside the skin, and foaming progresses from the lower side inside the bag-shaped epidermis 410.
As a result, the end portion 4122 at the tip portion of the boundary portion 4123 where the seam is formed by the sewing machine on the side of the lower epidermis 412 is pushed upward by the foaming material 420 growing from the lower side, and the upper epidermis 411 It is pressed against the tip portion 4111.

As a result, a gap formed between the tip portion 4111 on the side of the upper skin 411 and the tip portion 4121 on the side of the lower skin 412 in the vicinity of the tube 160 in a state where a tensile force is applied in the longitudinal direction of the opening 450. However, the inside of the epidermis 410 formed in a bag shape by being closed can be sealed with respect to the outside of the epidermis 410. As a result, the foaming material 420 has an opening 450.
The inside of the epidermis 410 formed in a bag shape can be reliably filled without leaking to the outside.

According to this embodiment, the opening 450 formed between the upper epidermis 411 and the lower epidermis 412.
The gap between the upper epidermis 411 and the lower epidermis 412 formed in the vicinity of the tube 160 in a state of being pulled in the longitudinal direction of the opening 450 by a means (not shown) is formed at the end 412 of the lower epidermis 412.
It can be sealed with 2. As a result, the foaming raw material 420 does not leak to the outside from the opening 450, and the inside of the bag-shaped skin 410 can be reliably filled, and the headrest is molded without impairing the appearance quality. be able to.

Further, since the foaming raw material 420 can be surely filled inside the bag-shaped skin 410 without leaking to the outside from the opening 450, the occurrence of defective products can be suppressed.
Product yield can be increased.

Although the headrest of the vehicle seat has been described in Examples 1 to 4 described above, the present invention can be used not only for the headrest but also for the seat cushion, the seat back, and the armrest of the vehicle seat.

Although the invention made by the present inventor has been specifically described above based on Examples, the present invention is not limited to the above Examples and includes various modifications. For example, it is possible to replace a part of the configuration of the embodiment with the configuration of another embodiment within the range that does not deviate from the gist, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is possible. Further, it is possible to add / delete / replace other known configurations with respect to a part of the configurations of each embodiment.

100,400 ... Headrest 110,110-1,410 ... Epidermis 1
11,111-1,111-2,111-4 ... Front epidermis 1111,1111-
1, 1111-2, 1111-4 ... Tip part 112, 112-1, 112-2,
112-3, 112-4 ... Rear epidermis 1121, 1121-11, 1121-2,
1121-3, 1121-4 ... Tip part 1122, 1122-1,1122-2
, 1122-3, 1122-4, end 1123, 1123-11, 1124-4 ...
Boundary part 1123-2,1123-3 ... Joint part 1124,1124-1,1
124-21124-4 ... Hole 120 ... Foam 141 ... Funnel 14
2 ... Nozzle

Claims (9)

It is an epidermis-integrated molded product formed by filling the inside of a bag-shaped epidermis with a foam.
The bag-shaped epidermis is formed with an opening inside the epidermis for supplying a foaming raw material for molding the foam.
The epidermis on one side of the epidermis sandwiching the opening is bent inside the opening.
The epidermis on the other side of the epidermis that sandwiches the opening has a portion that is easily bent at the tip that is bent inside the opening.
The portion of the epidermis on one side that is bent inward of the opening and the portion of the epidermis on the other side that is bent inward of the opening are in close contact with each other on both ends of the opening. In the vicinity of the central part, they face each other with a gap.
The other side in the portion where the portion of the epidermis on one side that is bent inside the opening and the portion of the epidermis on the other side that is bent inside the opening are opposed to each other with the gap. The epidermis-integrated molding is characterized in that the portion of the epidermis beyond the easily bent portion is formed in close contact with the bent portion inside the opening of the epidermis on one side. Goods. The epidermis-integrated molded product according to claim 1, wherein the epidermis on the other side of the epidermis sandwiching the opening has a portion that is bent inside the opening or a portion that is easily bent. A hole having a diameter smaller than the diameter of the nozzle is formed in the tip portion of the skin, which is a hole through which a nozzle for supplying a foaming raw material for molding the foam is passed, inside the skin formed in the shape of a bag. An epidermis-integrated molded product characterized by being made. The epidermis-integrated molded product according to claim 1 or 2, wherein the easily bendable portion of the epidermis on the other side of the epidermis sandwiching the opening is more than the other portion of the epidermis. An epidermis-integrated molded product characterized by being thinly formed. The skin-integrated molded product according to claim 3, wherein the easily bent portion of the skin on the other side of the skin sandwiching the opening is formed with a seam of a sewing machine or is heat-molded. An epidermis-integrated molded product characterized in that it is formed thinner than other parts of the epidermis. The epidermis-integrated molded product according to claim 1 or 2, wherein the easily bendable portion of the epidermis on the other side of the epidermis sandwiching the opening is a portion that is bent inside the opening. An epidermis-integrated molded product characterized by being formed by joining separate parts. The epidermis-integrated molded product according to claim 5, wherein the easily bendable portion of the epidermis on the other side of the epidermis sandwiching the opening is separated from the portion that is bent inside the opening. A skin-integrated molded product characterized in that it is formed by joining parts by sewing or by thermocompression-bonding another part and sewing. The epidermis-integrated molded product according to claim 1, wherein the epidermis on the other side of the epidermis sandwiching the opening has a portion bent inside the opening or a portion formed so as to be easily bent. The epidermis-integrated type is characterized in that a hole through which a flexible tube for supplying a foaming raw material for molding the foam is passed is formed inside the bag-shaped epidermis at the tip of the thigh. Molding. It is a method for manufacturing an epidermis-integrated molded product in which a foam is filled inside a bag-shaped epidermis and molded.
The bag-shaped epidermis is formed with an opening inside the epidermis for supplying a foaming raw material for molding the foam.
The epidermis on one side of the epidermis sandwiching the opening is bent inside the opening.
The epidermis on the other side of the epidermis sandwiching the opening is formed so that the tip of the bent portion inside the opening is easily bent, and the bent portion inside the opening or the easily bent portion is formed. and holes of smaller diameter than the diameter of the nozzle a hole for the passage of the nozzle for supplying the foaming material inside the skin formed in the bag shape is formed in the previous section than the portion,
The nozzle is passed through a hole formed in the epidermis on the other side of the epidermis sandwiching the opening for passing the nozzle.
The hole is formed by pulling the opening in the longitudinal direction of the opening and bending a portion of the epidermis on one side inside the opening and a portion of the epidermis on the other side bent inside the opening. Adhere to the part away from the nozzle that passed through
A state in which a portion of the epidermis on one side bent inside the opening and a portion of the epidermis on the other side bent inside the opening are brought into close contact with each other at a portion separated from the nozzle passed through the hole. By pulling back the nozzle that has passed through the hole, the easily bendable portion of the epidermis on the other side is bent, and the portion of the epidermis on the other side is ahead of the easily bendable portion. The portion is formed in a portion where the portion bent inside the opening of the epidermis on one side and the portion bent inside the opening of the epidermis on the other side are not in close contact with each other in the vicinity of the nozzle. Press against the inwardly bent portion of the epidermis on one side,
From the nozzle to the bag shape in a state where the portion of the epidermis on the other side beyond the easily bent portion is pressed against the portion of the epidermis on the one side that is bent inside the opening. The foaming raw material is supplied to the inside of the formed epidermis,
A method for producing an epidermis-integrated molded product, which comprises filling the inside of the bag-shaped epidermis with a foam by foaming the supplied foaming raw material. The method for manufacturing an skin-integrated molded product according to claim 8, wherein the opening is pulled in the longitudinal direction of the opening and bent inward of the opening of the skin on one side and the other. With the portion of the side epidermis bent inside the opening in close contact with the portion separated from the nozzle passed through the hole, the nozzle passed through the hole is pulled back to the other side of the epidermis. By pressing the portion beyond the easily bent portion against the end of the bent portion inside the opening of the epidermis on one side, the opening of the epidermis on one side sandwiches the nozzle. It is characterized in that a space formed by a portion bent inside the portion and a portion bent inside the opening of the epidermis on the other side is blocked from a space formed inside the epidermis formed in a bag shape. A method for manufacturing a skin-integrated molded product.

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